标题： 从次级通道跟踪冰立方的信号 显示英文标题

标题： Track signals at IceCube from subleading channels

摘要： 在冰立方观测站，由高能μ子穿过数公里后衰变的事件被表征为轨迹。 这些μ子主要由带电流（CC）μ子中微子-强子相互作用产生。 然而，μ子也通过$W$玻色子产生，并在τ轻子和重介子的衰变中产生，这些τ轻子和重介子是由所有中微子种类引发的中性流和带电流相互作用产生的。 在本文中，我们研究了这些次级通道对冰立方中被表征为轨迹的事件的贡献。 我们的结果表明，这些通道对应于HESE轨迹事件的一个不可忽略的比例。 此外，我们表明，其贡献集中在比来自μ子中微子带电流相互作用的μ子能量更低的μ子上，对于同一过程的可见能量而言。 最后，我们研究了这些额外通道对天体物理中微子通量描述的影响，并发现包括这些次级过程对于确定天体物理中微子通量的参数非常重要。 显示英文摘要

摘要： Tracks events at the IceCube Observatory are characterized by an energetic muon crossing several kilometers before decaying. Such muons are dominantly produced in charged current (CC) muon neutrino - hadron interactions. However, muons are also produced through the $W$ - boson production and in the decay of tau leptons and heavy mesons created in neutral and charged current interactions induced by all neutrino flavors. In this paper, we investigate the contribution of these subleading channels to events characterized as tracks at the IceCube. Our results indicate that these channels correspond to a non - negligible fraction of the HESE track events. In addition, we show that its contributions are concentrated in muons that are less energetic than those arising from muonic neutrino CC interactions for the same visible energies of the process. Finally, we investigate the impact of these additional channels on the description of the astrophysical neutrino flux, and we find that the inclusion of these subleading processes are important in determining the parameters of the astrophysical neutrino flux.